Summary:
The Onalaska School District has one high school, Onalaska High School, serving grades 9–12 in the small Washington community of Onalaska. The school enrolls 281 students, has an 18.7-to-1 student-teacher ratio, and spends approximately $18,655 per student. Because it is the district’s only high school, its results represent the district’s high-school performance as a whole.
Onalaska High School’s strongest outcomes are graduation and English Language Arts. The 2024–2025 graduation rate was 90%, well above Washington’s 82.6% rate. In 2025–2026, 61.29% of students were proficient in English Language Arts, compared with 52.81% statewide and 44.08% across the district. The school’s ranking also improved from the 33rd percentile in 2023–2024 to approximately the mid-40th percentile in the two most recent years. These results suggest that many students are completing high school successfully and that literacy performance is a relative strength.
Math is the most important area for improvement. Only 20.63% of students were proficient in math in 2025–2026, compared with 32.24% in the district and 43.11% statewide. Science also needs attention after proficiency fell from 58.62% to 42.86% in one year, placing the school below both comparison averages. Parents should view these results alongside the school’s small enrollment, since year-to-year assessment rates can fluctuate when the tested group is limited. Overall, the school offers strong graduation and ELA outcomes but has an uneven academic profile, with math intervention and investigation of the recent science decline likely to be the highest priorities.
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